Automatic wagon-brake.



H. J. WILLIAMS. AUTOMATIC WAGON BRAKE.

APPLIOATION FILED MAE. 17 1909.

' Patented June 22, 1909.

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H. J. WILLIAMS. AUTOMATIG WAQONIBRAKE.

APPLICATION FILED MAR. 17, 1909. 925,617, Patented June 22, 1909.

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UNTTED TATE PATN @FTQ.

HARRY J. WILLIAMS, OF WILLIS, KANSAS.

AUTOIVIATIC WAGON-BRAKE.

T all whom it may concern:

Be it known that I, HARRY J. WILLIAMS, a citizen of the United States, residing at Nillis, in the county of Brown and State of Kansas, have invented certain new and useful Improvements in Automatic Viagon-Brakes, of which the following is a specification.

This invention relates to automatic brakes for wagons or other vehicles, and has par ticular reference to certain specific details of construction hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which Figure 1 is a vertical longitudinal section, showing the parts in the position assumed when draft is being applied to the vehicle; Fig. 2 is a vertical transverse section on the line 2-2 of Pi 1; Fig. 3 is a transverse detail substantially on the line of 33 of Fig. 1; Fig. 4 is detail perspective of a part of the connecting rod to be hereinafter described; Fig. 5 is a bottom plan of the running gear of a wagon showing the invention applied thereto; Fig. 6 is a side elevation of a portion of the rear truck, one wheel being removed, and Fig. 7 is a detail perspective of the catch or locking means for a lever to be hereinafter described.

Throughout the following detail description and on the several figures of the drawings similar parts are referred to by like reference characters.

Referring to the drawings 10 indicates in a conventional manner the running gear of an ordinary lumber wagon, comprising front wheels 11, rear wheels 12, a reach 13, and a tongue 14. A brake beam having shoes 16 is suspended by means of a hanger 17 from the reach, the shoes being adapted to cooperate with the rear wheels 12. In brakes of this nature it is desirable for the friction to be applied to the running gear in proportion to the force of the vehicle tending to move faster than the horses attached thereto. In this instance, the brake is operated by means of a series of levers and connections between the brake beam 15 and the neck yoke (not shown). A shaft 18 is journaled in fixed bearings 19 of any suitable character connected to the rear truck, said shaft extending transversely of the truck. J ournaled for free rotation or oscillation upon the shaft 18 is a double lever 20 comprising two main parts 20 connected at their upper ends by means of rods 21 to the brake beam 15 and connected together at their lower Specification of Letters Patent.

Application filed March 17, 1909.

latented June 22, 1909.

Serial No. 483,997.

ends by means of a cross bolt 22. A rod 23 having a forked rear end 23 is connected to the lever 20 by means of the bolt 22, the fork of the rod 23 lying preferably within the members 20. The front end of the rod 23 has pivotal connection at 24 with a draft rod 24. The rod 24 is bent into an eye in front of the point of connection 24 as indicated at 25 and is thereby connected to a draft lever 26 pivoted at 27 within the tongue 14 and to whose upper end is attached the ordinary double tree 28. The draft lever 26 passes through a slot 1 4 in the tongue and is adapted to bear against metallic plates 29 and 29, on the upper and lower surfaces of the tongue res )ectively when draft is being applied to the ouble tree and said lever. The front end of the draft bar 24 is supported by a guide 24 and has connected thereto an equalizing bar 30 and to the ends of said equalizing bar are connected a pair of flexible connections, such as chains 31 passing around a air of pulleys 32 journaled in brackets 33 a acent to the front end of the tongue. The upper ends of the chains 31 are connected to a clip 34 whereby the same is connected to the neck yoke.

By the construction thus far described it will be understood that if a vehicle tends to run faster than the horses there will be a relative backward draft on the clip 34 tending to cause the draft connections 24 and 23 to move forwardly with relation to the running gear and thereby turning the lever 20 on the axis 18 to set the brake. Such operation of the draft bar 24 will cause the double tree to be drawn backward by virtue of its connection with the lever 26, thus withdrawing the double tree and swingle trees from the horses heels. and tends to lag draft upon the double tree and lever 26 will tend to restore the brake to its normal position as indicated in Fig. 1.

In the construction of brakes of this type it is desirable and sometimes essential that means be provided to prevent the automatic operation of the brake when it is desired to back the wagon by the horses. To this end the rock shaft 18 is so mounted as to rotate in its bearings 19 and rigidly connected thereto is an arm 35 connected by means of a link 36 to a locking hook 37. The said hook is pivoted at 38 to the rear axle at one end and at the other end is adapted to embrace the cross bolt 22 of the lever 20 when the latter is in the rear position, indicated in Fig. 6. The

The moment the wagon is checked hook 37 is bent near its hinged end and is adapted to bear against the plate 37 in order to prevent abnormal wear upon the aXle when the hook is subjected to the strains incidental to this operation. When the hook is in en gagement with the bolt 22 a rearward thrust of the horses on the neck yoke and connections will not affect the brake. The operation of the hook 37, being unusual and not ordinarily desirable, the rock shaft is normally held in such a position that the hook37 will be out of the path of the bolt 22. To this end the rock shaft 18 has connected thereto a lever or handle 18 which may be held elevated by any suitable means. As indicated in. this instance the handle 18 is held in cooperation with one of the standards 39, by means of a hook 4L0 pivoted at its rear end to a bracket 41 clamped to the standard. A spring 42 connected to the hook at one end and to the standard brace 43 at its other end normally tends to hold the hook in engagement with the lever 18. The hook may be of any suitable shape, either to aositively lock the arm 18 or merely to hold it so that it may be Withdrawn therefrom by application of force to its upper end when it is desired to operate the hook 37. By the means just described, the braking mechanism and the locking mechanism therefor are not dependent for their operations or functions upon the presence of a boX on the wagon.

Certain minor details of construction may be modified within the scope of the claims hereinafter made and it is not my desire to be limited thereto except as required by the state of the art.

In order to accommodate the length of the rod 23 to the variations in length of the running gear of the wagon, as for instance when elongating it for a hay rack, any suitable adjusting means may be used therefor, or an additional section of bar (not shown) may be provided to connect to the end of the bar 23.

Having thus described the invention, what is claimed as new is:

1. In an automatic brake, the combination with a running gear of a wagon, of a brake beam suspended therefrom, a rock shaft journaled to the running gear, a double lever journaled on the rock shaft and connected at one end to the brake beam, the other end thereof having a transverse bolt, means connected to said bolt for operation of the brake lever and brake beam, and means to prevent operation of the brake lever, such means 1ncluding a pivoted hook to embrace the bolt and means connecting the hook with the rock shaft.

2. In an automatic brake, the combination with a running gear of a wagon, of a brake beam suspended therefrom, a rock shaft journaled to the running gear, a double lever journaled on the rock shaft and connected at one end to the brake beam, the other end thereof having a transverse bolt, means connected to said bolt for operation of the brake lever and brake beam, an arm connected to the rock shaft, a hook pivoted to the running gear, and means between the said rock shaft arm and said hook to cause the hook to embrace the said bolt.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY J. WILLIAMS.

Witnesses:

G. P. HnnuLrcn, A. SPENOE. 

